A 3-week-old infant who underwent a complex cardiothoracic surgery develops a large right-sided pleural effusion. A thoracentesis is performed, revealing a milky white fluid. Laboratory analysis confirms a triglyceride level of 150 mg/dL and the presence of chylomicrons. In addition to nutritional modifications and drainage, which pharmacologic agent has been effectively used to manage chylothorax by reducing chyle flow?